AMD Ryzen 5 PRO 7645

The AMD Ryzen 5 PRO 7645 sits in a crowded performance tier, delivering a composite average benchmark score of 32,446. This places it at the 88th percentile of all CPUs tracked, indicating strong overall capability that edges into the upper echelon of mainstream processors. The data shows a processor that trades blows with top-tier mobile and desktop parts, landing within a razor-thin margin of its closest competitors.

Benchmark Performance

The Ryzen 5 PRO 7645’s aggregate score of 32,446 is nearly indistinguishable from its nearest rivals, with the largest gap being a mere 0.4% deficit. In Cinebench R23, the chip posts a multi-core score of 21,710 and a single-core score of 3,065. The multi-core figure suggests robust throughput for heavily threaded workloads, while the single-core result is exemplary for a 65W-class part. In Cinebench R20, the scores scale down predictably to 9,118 multi-core and 1,287 single-core, while Cinebench R15 shows 2,188 and 308 respectively. This linear scaling across rendering benchmark versions indicates consistent performance headroom under sustained load.

PassMark results reveal specific strengths. The multi-thread score of 25,489 and single-thread score of 3,652 both indicate balanced execution. Data compression throughput is exceptional at 286,298, suggesting strong memory and cache efficiency. Integer math hits 74,782, while floating-point math reaches 45,202 — a ratio typical of a 6-core design that favors integer-heavy code. Extended instructions score 21,813, showing solid SIMD capability. The find prime numbers test yields a modest 198, which is characteristic of a chip that excels in branch-predictable workloads rather than raw prime calculation. Random string sorting completes at 34,557, reflecting good cache bandwidth for pointer-chasing operations. Data encryption scores 16,657, and physics simulation hits 1,598.

The deltaPct values against rivals are staggeringly tight: -0.2% versus the Intel Core i5-14400F, -0.2% versus the Intel Core i7-12800H, -0.4% versus the AMD Ryzen 7 250, and -0.4% versus the Intel Core i7-13705H. These differences are within run-to-run variance, meaning the Ryzen 5 PRO 7645 offers performance parity with all four competitors. In practical terms, no workload would show a meaningful winner among this group based on aggregate scores alone.

Platform and Compatibility

The Ryzen 5 PRO 7645 is built on the AMD Socket AM5 platform, which provides a modern foundation with several forward-looking features. The chip uses the Zen 4 architecture with the Raphael codename, manufactured on TSMC’s 5 nm process. The die size is 71 mm², packing 6,570 million transistors into a compact footprint. Memory support is limited to DDR5, operating in dual-channel mode with a theoretical bandwidth of 83.2 GB/s. ECC memory is supported, which is notable for workstation and server deployments where data integrity is critical.

PCIe connectivity is robust: the CPU provides 24 Gen 5 lanes. This is a significant upgrade path consideration, as it allows for high-bandwidth storage and GPU configurations without a chipset bottleneck. The integrated Radeon Graphics unit means the processor can operate without a discrete GPU, though its capability is not quantified here. The processor is not multiplier-unlocked, so overclocking is not an option — users must rely on the rated 3.80 GHz base and 5.10 GHz boost clocks. The part number is 100-000000600, and production status is active, meaning it remains in current supply. The release date is June 12, 2023, placing it in the early AM5 generation.

Upgrade path on AM5 is a key advantage. The socket has seen multiple processor generations, and the platform supports both the current Ryzen 5 and higher-tier parts, allowing users to swap in a more powerful CPU later without changing motherboards. The 24 Gen 5 lanes also future-proof PCIe device compatibility. However, the lack of an unlocked multiplier limits enthusiast tuning, and the exclusive DDR5 requirement means a more expensive memory investment compared to platforms supporting older standards.

Power and Thermals

The Ryzen 5 PRO 7645 carries a 65W TDP, placing it firmly in the mainstream efficiency class. This is a modest thermal envelope for a 6-core Zen 4 part, and benchmark results indicate it sustains competitive performance without exotic cooling. A stock air cooler is likely sufficient for most workloads, given the power draw. The data does not include temperature figures, but the 65W rating implies that the processor will remain within comfortable thermal limits under typical multi-threaded loads.

The 5 nm process node contributes to this efficiency, as smaller geometries typically reduce power leakage and improve performance-per-watt. The 71 mm² die size is relatively small, which aids in heat dissipation from a concentrated area. The integrated Radeon Graphics adds a small additional thermal load, but the total remains within the 65W envelope. For workstation builds, this means quieter operation and lower cooling costs compared to higher-TDP parts. Sustained rendering workloads, as shown by the Cinebench scores, do not appear to induce throttling that would degrade outputs, given the consistent scaling across R15, R20, and R23.

How It Compares

Intel Core i5-14400F: The data shows a 0.2% gap in favor of the Intel part, with average scores of 32,508 versus 32,446. This is effectively a tie. The Ryzen 5 PRO 7645 matches the i5-14400F in aggregate throughput, but the Intel chip’s hybrid architecture may offer different single-thread behavior in specific applications. For mixed workloads, neither part holds a definitive edge.

Intel Core i7-12800H: The i7-12800H averages 32,513, also 0.2% ahead. This is a mobile H-series processor, so the comparison pits the Ryzen desktop chip against a high-end laptop part. Achieving parity with a mobile i7 at a 65W desktop TDP is notable, as the i7-12800H likely draws more power in its best-case mobile implementation. The Ryzen’s sustained performance is comparable despite the platform difference.

AMD Ryzen 7 250: This rival averages 32,584, just 0.4% higher. The Ryzen 7 250 carries a higher model number, suggesting a larger core count or higher clocks, yet the Ryzen 5 PRO 7645 nearly matches it. This indicates that the PRO 7645’s Zen 4 architecture is highly efficient per core, closing the gap against a nominally superior SKU.

Intel Core i7-13705H: The i7-13705H scores 32,586, again 0.4% ahead. Similar to the i7-12800H, this is a mobile processor. The Ryzen 5 PRO 7645’s ability to stay within 0.4% of this part underscores its competitive position. For users comparing a desktop AM5 build against a high-end laptop, the PRO 7645 offers comparable compute without sacrificing power efficiency.

Single-Thread vs Multi-Thread Behavior

The split between single-thread and multi-thread performance reveals the Ryzen 5 PRO 7645’s character. In Cinebench R23, the single-core score of 3,065 versus a multi-core score of 21,710 yields a ratio of roughly 7.1x scaling across 6 cores and 12 threads. This is near-ideal scaling, indicating minimal overhead in thread scheduling and efficient use of the 32 MB shared L3 cache. The single-thread PassMark score of 3,652 is strong, and the multi-thread score of 25,489 shows a 7.0x multiplier — again, excellent parallel efficiency.

For real workloads, this means the processor handles both lightly threaded tasks (e.g., legacy software, single-threaded games, office applications) and fully parallel workloads (e.g., video encoding, 3D rendering, data analysis) with equal competence. The high single-thread score of 3,652 in PassMark suggests responsiveness in everyday tasks, while the multi-thread score of 25,489 indicates no bottleneck when all cores are engaged. The data compression score of 286,298 benefits from both high single-thread clock speeds and the shared L3, making file archiving particularly fast.

The gap between single- and multi-thread performance is not lopsided. Some processors sacrifice one for the other, but the PRO 7645 maintains balance. The boost clock of 5.10 GHz drives the single-thread results, while the 6-core design with 12 threads provides solid parallel throughput. In mixed workloads that alternate between light and heavy threads — common in software development or content creation — this balance prevents noticeable stutter. The physics score of 1,598 and integer math score of 74,782 further confirm that the chip handles both branch-heavy and arithmetic-heavy code without a pronounced weakness.